Phylum Dinoflagellata Engl. (1903) see Superclass Dinoflagellata Bütschli, 1885
Count: [*†*] 4c;13o;53f;257g; †1o;11f;512g [2 Mar 2016]
   Subphylum Dinokaryota Fensome, F.J.R. Taylor, G. Norris, Sarjeant, Wharton & G.L. Williams (1993)
  Count: [*†*] 3c;12o;49f;243g; †1o;10f;511g [2 Mar 2016]
     Class Dinophyceae Pascher (1914)
    Count: [*†*] 10o;40f;207g; †1o;10f;511g [2 Mar 2016]
       Subclass Peridiniphycidae Fensome, F.J.R. Taylor, G. Norris, Sarjeant, Wharton & G.L. Williams (1993)
      Count: [*†*] 2o;18f;96g; †9f;490g [26 Feb 2016]
         Genus †Pentafidia Backhouse (1988), incertae sedis
        Count: -